Measured moment balances in the actual moving pressure gauge #
The pressure coefficient is the measured second moment of the normalized physical density. It varies with the true similarity coordinate. All moment identities below use the actual state residual and the actual pressure recipe.
Actual state moment balances #
Auxiliary torus averaging, radial integration, and the pressure constructor connect the literal state residual to its actual slow debt derivatives.
Mean bar, defined pointwise by MeanMomentBounds.liftedTorusAverage (f n).
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Coordinates ordered to match the two actual interval integrals.
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Slow projection, bundling toFun, map_add, map_smul, cont.
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- NavierStokes.StateMomentBalances.AuxiliaryAverage.slowProjection = { toFun := fun (x : NavierStokes.CorrectionState.Lift S) => (x.1, x.2.1), map_add' := ⋯, map_smul' := ⋯, cont := ⋯ }
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The actual torus mean commutes with fixed slow derivatives and removes the periodic directions. This does not assume a commuting inverse.
The torus-mean flux identity used for the initial improved bar estimate.
Explicit graph operators acting on the actual torus means #
Averaged, defined pointwise by PressureStream.torusAverage (f n).
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Native operators, given by graphOperators r ε fast (z, 0) (t, 0) v.
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- NavierStokes.StateMomentBalances.nativeOperators r ε fast z t v = NavierStokes.CorrectionState.graphOperators r ε fast (z, 0) (t, 0) v
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Flux residual, given by o.time u + o.radialDiv d R + o.dz Z - o.viscosity k u - o.radialDiv d T.
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Balance as an element of ℝ.
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Angular balance along as an element of ℝ.
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Axial balance along as an element of ℝ.
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Radial shell data, collecting smooth, supported.
- supported : RadialAlias.RadiallySupported a b F
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Literal state fluxes and actual debt identities #
Theta radial flux, given by MeanIncrementBounds.thetaRadial c.base u.mean + u.covariance 0 1.
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Theta axial flux, given by MeanIncrementBounds.thetaAxial c.base u.mean + u.covariance 2 1.
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Axial radial flux, given by MeanIncrementBounds.axialRadial c.base u.mean + u.covariance 0 2.
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Axial axial flux, given by MeanIncrementBounds.axialAxial c.base u.mean + u.covariance 2 2.
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Regularity of the actual pointwise fields; no averaged equation or moment identity is included among the premises.
- velocity : DefectIncrementBounds.Shell a b u
- radial : DefectIncrementBounds.Shell a b R
- axial : DefectIncrementBounds.Shell a b Z
- stress : DefectIncrementBounds.Shell a b T
- velocity_periodic (n : ℕ) : PressureStream.TorusPeriodicLift (u n)
- radial_periodic (n : ℕ) : PressureStream.TorusPeriodicLift (R n)
- axial_periodic (n : ℕ) : PressureStream.TorusPeriodicLift (Z n)
- stress_periodic (n : ℕ) : PressureStream.TorusPeriodicLift (T n)
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Angular inputs: an abbreviation for FluxInputs a b u.mean.angular (thetaRadialFlux c u) (thetaAxialFlux c u) c.virtualTheta.
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Axial inputs: an abbreviation for FluxInputs a b u.mean.axial (axialRadialFlux c u) (axialAxialFlux c u) c.virtualAxial.
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Pressure recipe, defined pointwise by PressureStream.meanPressure r.exponent r.inner r.outer (r.frequency n) r.inner_lt_outer r.radialDirection (u.gr c n).
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- NavierStokes.StateMomentBalances.pressureRecipe r c u n = NavierStokes.PressureStream.meanPressure r.exponent r.inner r.outer (r.frequency n) ⋯ r.radialDirection (u.gr c n)
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Pressure coefficient, given by IntegratedMeanBalances.moment 2 (PressureStream.rho r.inner r.outer r.inner_lt_outer) / 2.
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Axial debt potential, defined pointwise by CorrectionState.axialDefect c u n s + pressureCoefficient r * CorrectionState.pressureDefect c u n s.
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The exact pressure alias has zero auxiliary mean because the constructed pressure source has zero total mass.
Actual all-jet debt bounds yield the improved signed bump order #
Slow projection, given by (ContinuousLinearMap.fst ℝ S PressureStream.Plane).comp (ContinuousLinearMap.snd ℝ ℝ (S × PressureStream.Plane)).
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The hypothesis is a bound on the actual slow debt. The residual moment identity is supplied by the state theorems below, rather than a bump estimate.
Base pressure coefficient, given by IntegratedMeanBalances.moment 2 (PressureStream.rho a b hab) / 2.
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Pressure coefficient, given by basePressureCoefficient g.radial.inner g.radial.outer g.radial.inner_lt_outer * g.length n s ^ 2.
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Exact second moment of the scaled, normalized density.
This is the coefficient of the pressure debt, measured in the moving physical radius, rather than in the normalized profile radius.
The actual moving-gauge pressure moment. Freezing is used only to apply a radial integral theorem on one fiber; no slow derivative is frozen.
Local integration on a genuine open slow region #
Local smoothness, compact radial support, and true torus periodicity of a field. These are regularity hypotheses, not a moment equation.
- smooth (n : ℕ) : ContDiffOn ℝ (↑⊤) (f n) (PhysicalMeanDomain.slowDomain U)
- supported (n : ℕ) : PhysicalMeanDomain.SupportedOn a b U (f n)
- periodic (n : ℕ) : PhysicalMeanDomain.PeriodicOn U (f n)
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Localize family, defined pointwise by PhysicalMeanDomain.localize χ (f n).
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Local flux inputs data, collecting velocity, radial, axial, stress.
- velocity : LocalField a b U u
- radial : LocalField a b U R
- axial : LocalField a b U Z
- stress : LocalField a b U T
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All slow and radial derivatives are taken before integration. A compact slow cutoff equals one on a whole neighborhood, so no moving-boundary terms are omitted.
The actual reconstructed state in a moving similarity shell #
Regularity of an actual field on the moving physical shell.
- smooth (n : ℕ) : ContDiffOn ℝ (↑⊤) (f n) (PhysicalMeanDomain.slowDomain U.carrier)
- supported (n : ℕ) : VariableGaugeMean.SupportedGauge a b (VariableGaugeMean.qLength coord) U.carrier (f n)
- periodic (n : ℕ) : PhysicalMeanDomain.PeriodicOn U.carrier (f n)
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Moving flux inputs data, collecting velocity, radial, axial, stress.
- velocity : MovingField U a b u
- radial : MovingField U a b R
- axial : MovingField U a b Z
- stress : MovingField U a b T
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Moving angular inputs: an abbreviation for MovingFluxInputs U a b u.mean.angular (thetaRadialFlux c u) (thetaAxialFlux c u) c.virtualTheta.
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Moving axial inputs: an abbreviation for MovingFluxInputs U a b u.mean.axial (axialRadialFlux c u) (axialAxialFlux c u) c.virtualAxial.
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Pressure recipe, given by (VariableGaugeMean.reconstructState g c u).pressure.
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Axial debt potential, defined pointwise by CorrectionState.axialDefect c u n s + pressureCoefficient g n s * CorrectionState.pressureDefect c u n s.
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The residual is evaluated on the literal moving-gauge reconstruction. The differentiated potential contains the full variable measured coefficient.
All variable-coefficient terms and the actual debt classes #
On the positive axial half-plane the coefficient has a strictly positive axial derivative, so replacing it by a constant would change the identity.
The product rule is applied to the actual measured coefficient. In particular, the last summand is present even if the unweighted debts are known.
Explicit native Z balance, with the moving-density derivative retained.
The combined potential has the same all-jet order as its actual two debt components. The coefficient estimate uses the same moving strip.
Removed physical bumps for the same actual residuals #
The literal angular residual, its measured mass, and the removed physical bump all refer to the same state and moving chart.
Direct reconstruction version: the source is the actual axial residual after applying the moving pressure recipe, with no moment identity as input.
Fixed-point version for the actual output of a temporal or rank stage,
whose constructor finishes with reconstructState.